when you say "year to year", do you mean that you have a written lease with an auto-renew clause? if so, then no, you can not break your lease without getting a written agreement from your landlord.
but if your lease does not have an auto-renew clause, then you are now a month-to-month renter. simply give the written notice required to terminate a month-to-month agreement.
since you did not post your state, you're on your own to find out what that is.